42175640 has 96 divisors (see below), whose sum is σ = 109097280. Its totient is φ = 14616576.

The previous prime is 42175631. The next prime is 42175663. The reversal of 42175640 is 4657124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114737 + ... + 115103.

It is an arithmetic number, because the mean of its divisors is an integer number (1136430).

Almost surely, 2^42175640 is an apocalyptic number.

42175640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42175640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54548640).

42175640 is an abundant number, since it is smaller than the sum of its proper divisors (66921640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42175640 is a wasteful number, since it uses less digits than its factorization.

42175640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42175640 is about 6494.2774809828. The cubic root of 42175640 is about 348.0865376896.

The spelling of 42175640 in words is "forty-two million, one hundred seventy-five thousand, six hundred forty".